Zila M. Sanchez, MSc, PhD1, Mariana G. R. Santos, MPH1, Ana Paula D. Pereira, MPH1, Solange A. Nappo, MSc, PhD1, Elisaldo A. Carlini, MD, PhD1, Claudia M. Carlini, BSSc1, and Silvia S. Martins, MD, PhD2
Among the 82% alcohol lifetime users, 11% had first used alcohol before age 12 years. The lack of percep- tion of possible punishment by parents is associated with childhood alcohol use (OR 2.22, 95% CI 1.67-2.95). Adoles- cents who first used alcohol during childhood compared with those who only used alcohol at later ages are more likely to engage in binge drinking behaviors (OR 1.57, 95% CI 1.17-2.10), to have a pattern of heavy alcohol use (OR 1.98, 95% CI 1.26-3.09), and to have recently used illegal drugs (OR 1.74, 95% CI 1.39-2.16). According to hazard ratios, students with an earlier age of onset were more likely to have used tobacco and any illegal drug in the past year.